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/*=========================================================================
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.kitware.com/VolViewCopyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkITKImageToImageRegionFilter -
#ifndef __vtkITKImageToImageRegionFilter_h
#define __vtkITKImageToImageRegionFilter_h
#include "vtkITKImageToImageFilter.h"
#include "vtkImageClip.h"
class VTK_EXPORT vtkITKImageToImageRegionFilter : public vtkITKImageToImageFilter
{
public:
static vtkITKImageToImageFilter *New()
{
return new vtkITKImageToImageRegionFilter;
};
vtkTypeMacro(vtkITKImageToImageRegionFilter, vtkITKImageToImageFilter);
// Description:
// Set the Input of the filter.
virtual void SetInput(vtkImageData *input)
{
this->ImageClip->SetInput(input);
this->ImageClip->ResetOutputWholeExtent();
};
// Description:
// Return the input to the filter
virtual vtkDataObject* GetInput()
{
return (vtkDataObject::SafeDownCast( this->vtkCast->GetInput() ));
};
virtual void SetROIExtent( int extent[6] )
{
this->ImageClip->SetOutputWholeExtent(extent);
}
virtual void SetROIBounds( double bounds[6] )
{
vtkImageData *image = vtkImageData::SafeDownCast(this->ImageClip->GetInput());
if (image)
{
double inputVolumeOrigin[3], inputVolumeSpacing[3];
int inputVolumeDimensions[3], idx[6];
image->GetOrigin(inputVolumeOrigin);
image->GetSpacing(inputVolumeSpacing);
image->GetDimensions(inputVolumeDimensions);
// convert bounds into indices that represent VTK extents
for ( unsigned int j = 0; j < 6; ++j )
{
idx[j] = (int)( (bounds[j]-inputVolumeOrigin[j/2])/
inputVolumeSpacing[j/2] + 0.5);
// Truncate them if they go out of bounds
if (idx[j] < 0)
{
idx[j] = 0;
}
if (idx[j] >= inputVolumeDimensions[j/2])
{
idx[j] = inputVolumeDimensions[j/2] -1;
}
}
this->SetROIExtent(idx);
}
}
protected:
vtkITKImageToImageRegionFilter()
{
// Need an import, export, and a ITK pipeline
this->ImageClip = vtkImageClip::New();
this->vtkCast->SetInput( this->ImageClip->GetOutput() );
}
~vtkITKImageToImageRegionFilter()
{
this->ImageClip->Delete();
}
vtkImageClip * ImageClip;
private:
vtkITKImageToImageRegionFilter(const vtkITKImageToImageRegionFilter&); // Not implemented.
void operator=(const vtkITKImageToImageRegionFilter&); // Not implemented.
};
#endif
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